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                  <p><small><a name="ace_format_specifications"></a>PeaZip
is a free cross-platform file archiver and unace utility that provides
an unified
portable GUI for many Open Source technologies like 7-Zip, FreeArc,
PAQ, UPX... free alternative to WinRar, WinZip </small><small>and
similar
proprietary software</small><small>.<br>
- Create 7Z, ARC, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM, XZ, ZIP
files<br>
- Open and extract ACE, ARJ, CAB, DMG, ISO, LHA,
RAR, UDF, ZIPX files and more,</small><small> over 200 archive types
supported</small><small><br>
Features of PeaZip includes: </small><small> </small><small>archives
opener and extractor, </small><small>batch creation and </small><small>extraction
                  </small><small>of multiple
archives at once, </small><small>convert files, </small><small>create
self-extracting archives, split and join files,
strong encryption with two factor authentication, encrypted password
manager, </small><small>secure deletion, </small><small>find
duplicate files, </small><small>calculate hash and checksum,
export job definition as script.</small></p>
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            <td colspan="1" rowspan="1" style="vertical-align: top;"> <br>
            <h1 style="text-align: center;"><big><big><big><a
 name="ace_archive"></a>What is ACE file format, WinAce archives</big></big></big></h1>
            <br>
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                  <ul>
                    <li>
                      <p><a href="#ace_extension">WHAT ARE ACE FILES,
WINACE ARCHIVE FORMAT<br>
                      </a></p>
                    </li>
                  </ul>
                  <ul>
                  </ul>
                  </td>
                  <td style="vertical-align: top; width: 128px;">
                  <h2><img title=".ACE file extension"
 alt="ace extension" src="file-format/file-format.png"
 style="width: 96px; height: 96px;" align="right"></h2>
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            <div style="text-align: left; color: rgb(0, 0, 0);">
            <h2><big><big><big><a name="ace_extension"></a><a
 href="#ace_archive">What are ACE files, WinAce archive format</a></big></big><br>
            </big></h2>
            </div>
            <br>
            <div style="text-align: left;"> </div>
            <div style="text-align: left;"> </div>
            <a name="what_is_ace_file"></a>ACE extension designates a
file archiving and
compression format developed by Marcel Lemke
for <a href="http://www.winace.com/">WinAce<img
 title="winace repository" alt="winace online"
 src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a>, a
shareware closed source software released as GUI program
for Microsoft Windows platform only (unace de-compressor is available
as command line tool both for Windows and Linux platforms) developed as
early alternative to
PKZip / WinZip ZIP format.<br>
            <br>
ACE standard features a compression ratio higher than <a
 href="zip-file-format.html"><span style="font-weight: bold;">ZIP file
format</span></a> (similar but usually
inferior compared to <a href="what-is-rar-file.html"><span
 style="font-weight: bold;">RAR format</span></a>)
and supports quite robust 160bit Blowfish encryption, implementation
based on Bruce
Schneier's Blowfish
symmetric-key block
cipher, developed by Schneier before AES process candidate finalist
Twofish cipher.<br>
            <a name="ade_file_format_specifications"></a>Read more
about .ace file type: <a target="_blank"
 href="http://en.wikipedia.org/wiki/WinAce">WinAce
software<img title="WinAce Wikipedia page" alt="winace wiki"
 src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a>, <a
 href="https://en.wikipedia.org/wiki/Blowfish_%28cipher%29">Blowfish
cypher<img title="What is Blowfish cipher" alt="Blowfish cypher wiki"
 src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a>, and <a
 target="_blank"
 href="http://en.wikipedia.org/wiki/ACE_%28file_format%29">ACE file
extension<img title="ACE format on Wikipedia" alt="ACE format wiki"
 src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a> Wikipedia
pages.<br>
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="24" cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="text-align: right; vertical-align: middle; width: 64px;">
                  <h2><span style="font-weight: bold;"><img
 title="What is ACE file format, native WinACE archives extension"
 alt="what are ace archives" src="file-format/information.png"
 style="width: 48px; height: 48px;"><br>
                  </span></h2>
                  </td>
                  <td
 style="font-style: italic; vertical-align: middle;"><span
 style="font-style: italic;"></span><span style="font-style: italic;"></span>PeaZip
features <a href="ace-files-utility.html">read-only support for
ACE format</a> (open, browse, extract ACE files, and <a
 href="convert-files.html">convert existing
.ace archives</a> into any write supported archive format), and due the
closed-source nature of the software it is required the separate <a
 href="peazip-add-ons.html">UNACE Plugin</a>.<br>
On
Windows platform UNACE plugin is based on unacev2.dll, the last
component made officially available from WinAce team, that is currently
abandoned and unpatched since many years ago, and known to be not
longer safe to use due critical unpatched
vulnerabilities.<br>
Out of the box, PeaZip does not come with unacev2.dll (which
requires separate manual download and installation from user) so it is
immune to said vulnerabilities. No version of PeaZip will attempt to
automatically download or install UNACE plugin, nor will use UNACE
plugin (even if installed) to open ace files disguised for other
formats - e.g. changing file extension.<small> <br>
                  </small>Help &gt; About screen reports if UNACE
plugin is installed and features a button for quick removal of the
plugin.<br>
                  <big><br>
                  </big>
                  <h3><big><img
 title="ACE format features and specifications"
 alt="ace file format features" src="extract-archive.png"
 style="width: 112px; height: 45px;"></big></h3>
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                        <td style="vertical-align: top; width: 24px;">&nbsp;&nbsp;
                        <br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;">&nbsp;&nbsp;
                        <br>
                        </td>
                      </tr>
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                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <table style="width: 100%; text-align: left;"
 border="0" cellpadding="0" cellspacing="0">
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 style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">
                              <h3><big><big><big><big><big><a
 name="what_is_ace_file_type"></a>.ACE</big></big></big></big></big></h3>
                              </td>
                              <td
 style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">Author
Marcel Lemke<br>
                              </td>
                            </tr>
                          </tbody>
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                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <h4><big>SPEED <img alt="ace format features"
 title="ace compression speed" src="zip-files/star3.png"
 style="width: 80px; height: 16px;"></big></h4>
Ace format features average speed. Compression and decompression are
more computing intensive
than in ZIP format.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <h4><big>COMPRESSION
RATIO <img alt="ace specifications" title="ace compression ratio"
 src="zip-files/star3.png" style="width: 80px; height: 16px;"></big></h4>
Ace archives features an average compression ratio. Provides better
compression than Deflate-based ZIP, but
inferior to modern formats as 7Z and RAR.</td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <h4><big>ADVANCED
OPTIONS <img alt="ace specs" title="ace format options"
 src="zip-files/star3.png" style="width: 80px; height: 16px;"></big></h4>
Ace format features a reasonable choice of advanced options. Developed
as capable all-around replacement for ZIP format,
but not updated in recent years.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
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                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
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                        </td>
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                  <td
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 href="wim-files.html">WHAT IS MICROSOFT WIM IMAGING FORMAT</a><br>
                  </small></td>
                </tr>
              </tbody>
            </table>
            <small><small>&nbsp;</small></small><br>
            <table style="text-align: left;" border="0" cellpadding="6"
 cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="zip-file-format.html">ZIP FILE EXTENSION</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="zipx-file-format.html">WHAT ARE ZIPX ARCHIVE FILES</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="archive-file-formats-comparison.html">COMPARISON OF ARCHIVE
FORMATS, ACE VS RAR VS ZIP<br>
                  </a></small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="convert-files.html">CONVERT LEGACY ACE FILES</a></small></td>
                </tr>
              </tbody>
            </table>
            <p> </p>
            <p><a href="peazip-help-faq.html">FAQ</a>
&gt; Archive file types &gt; What are ace files</p>
Topics and search suggestions about what is ACE file format, the native
WinAce archive type, and what are ACE extension features and
specifications, characteristics of the standard, advantages and
disadvantages compared to more moder archiving formats as rar and 7z:
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="6" cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> what are
ace files,<br>
ace format features,<br>
what is ace archive,<br>
format features and specifications,<br>
ace Blowfish encryption, </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;">WinAce
archives
specifications,<br>
ace specs,<br>
features of ace archives,<br>
native WinAce archives extension,<br>
160 bit Blowfish encryption, </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;">faq
about .ace extension,<br>
what is ace file format,<br>
advantages of ace format,<br>
ace file format features,<br>
winace alternative,<br>
                  </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> what is
ace archive format, <br>
what is winace,<br>
characteristics of ace format<br>
ace compression options,<br>
what are ace archives<br>
                  </td>
                </tr>
              </tbody>
            </table>
            </td>
          </tr>
        </tbody>
      </table>
      <table
 style="background-color: rgb(255, 255, 255); margin-left: auto; margin-right: auto; width: 960px; text-align: left;"
 border="0" cellpadding="24" cellspacing="0">
        <tbody>
          <tr>
            <td style="vertical-align: top;">Tag
Cloud<br>
            <span class="wrd free-rar4" id="ace-files"> <a
 href="ace-file-format.html">ACE files</a></span> <span
 class="wrd free-rar0" id="ace-files-specs"> <a
 href="ace-file-format.html">ACE format specs</a></span> <span
 class="wrd free-rar1" id="blowfish-algorithm"> <a
 href="ace-file-format.html">Blowfish
encryption</a></span> <span class="wrd free-rar0"
 id="free-archiver-utility"> <a href="index.html">file archiver utility</a></span>
            <span class="wrd free-rar1" id="free-unace"> <a
 href="ace-files-utility.html">free UNACE utility</a></span> <span
 class="wrd free-rar0" id="ace-format-features"> <a
 href="ace-file-format.html">ACE format features</a></span> <span
 class="wrd free-rar2" id="winace-files"> <a
 href="ace-file-format.html">WinAce archives</a></span> <span
 class="wrd free-rar0" id="winace-alternative"> <a
 href="ace-files-utility.html">WinAce alternative</a></span> <br>
            <span class="wrd free-rar3" id="what-is-ace-format"> <a
 href="ace-file-format.html">what is ACE file format</a></span> <span
 class="wrd free-rar1" id="ace-extension"> <a
 href="ace-file-format.html">ACE file extension</a></span> <span
 class="wrd free-rar2" id="open-ace-rar-zip-files"> <a
 href="how-to-open-rar-tar-zip-files.html">how to open ace rar zip files</a></span>
            <span class="wrd free-rar1" id="7-zip-files"> <a
 href="7z-file-format.html">7-Zip files</a></span> <span
 class="wrd free-rar0" id="file-hashing-checksum-tools"> <a
 href="verify-checksum-hash.html">checksum hash tool</a></span> <span
 class="wrd free-rar1" id="convert-rar-zip-archive"> <a
 href="convert-files.html">convert ACE RAR ZIP files</a></span><br>
            <span class="wrd free-rar2" id="free-archiver-download"> <a
 href="index.html">free archiver download</a></span> <span
 class="wrd free-rar1" id="open-extract-ace-files"> <a
 href="ace-files-utility.html">extract
ACE archives</a></span> <span class="wrd free-rar0"
 id="open-cab-files-view-content"> <a href="cab-files-utility.html">extract
CAB file</a></span> <span class="wrd free-rar2"
 id="open-encrypted-rar-zip-file"> <a
 href="extract-encrypted-files.html">extract encrypted
file</a></span> <span class="wrd free-rar1"
 id="how-to-extract-archives"> <a
 href="how-to-extract-rar-zip-archives.html">extract ACE RAR TAR ZIP
files</a></span> <span class="wrd free-rar2" id="BZ2-extension"> <a
 href="bzip2-file.html">.BZ2</a></span> <span class="wrd free-rar1"
 id="easy-unace-utility"> <a href="peaextractor-unace-unrar-unzip.html">easy
unace utility</a></span><br>
            <span class="wrd free-rar4" id="download-free-rar-opener"> <a
 href="free-rar.html">free RAR
software</a></span> <span class="wrd free-rar0"
 id="open-source-encryption-software"> <a href="encrypt-files.html">how
to encrypt files</a></span> <span class="wrd free-rar1"
 id="split-file-spanning-how-to"> <a href="file-split.html">how to
split files</a></span> <span class="wrd free-rar2"
 id="free-7zip-files-extraction-tool"> <a
 href="7zip-files-utility.html">open 7Z archives</a></span> <span
 class="wrd free-rar4" id="open-ace-files"> <a
 href="ace-files-utility.html">open ACE files</a></span> <span
 class="wrd free-rar3" id="free-rar-files-extraction-utility"> <a
 href="free-rar.html">open
RAR files</a></span> <br>
            <span class="wrd free-rar3"
 id="free-zip-files-extraction-utility"> <a
 href="zip-files-utility.html">open ZIP files</a></span> <span
 class="wrd free-rar0" id="portable-ace-rar-tar-zip-software"> <a
 href="peazip-portable.html">portable ACE RAR TAR ZIP software</a></span>
            <span class="wrd free-rar3" id="what-is-rar-file-extension">
            <a href="what-is-rar-file.html">RAR file format</a></span> <span
 class="wrd free-rar1" id="secure-file-deletion-program"> <a
 href="secure-delete.html">secure
delete</a></span> <span class="wrd free-rar3"
 id="windows-tar-files-viewer"> <a href="tar-windows.html">TAR file
extraction</a></span> <span class="wrd free-rar1"
 id="windows-imaging format"> <a href="wim-files.html">Windows Imaging
Format</a></span> <br>
            <span class="wrd free-rar2" id="what-is-zip-file-type"> <a
 href="zip-file-format.html">what is
ZIP format</a></span> <span class="wrd free-rar1"
 id="download-rar-tar-zip-files-extractor"> <a href="index.html">free
RAR TAR ZIP files utility</a></span> <span class="wrd free-rar0"
 id="open-zipx-files-reader"> <a href="zipx-files-software.html">ZIPX
file extraction</a></span> <span class="wrd free-rar3"
 id="unace-plugin"> <a href="peazip-add-ons.html">UNACE plugin</a></span>
            <span class="wrd free-rar1" id="how-to-open-unreadable-file">
            <a href="peazip-password.html">how to open unreadable file</a></span>
            <span class="wrd free-rar3" id="pea-file-extension"> <a
 href="pea-file-format.html">PEA extension</a></span> <br>
            </td>
          </tr>
        </tbody>
      </table>
      <br>
      </td>
    </tr>
    <tr align="center">
      <td
 style="vertical-align: top; background-color: rgb(243, 242, 241);">
      <table
 style="margin-left: auto; margin-right: auto; width: 960px; text-align: left;"
 border="0" cellpadding="0" cellspacing="0">
        <tbody>
          <tr>
            <td style="vertical-align: top;"><br>
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            <td style="vertical-align: top;"><br>
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          <tr>
            <td style="vertical-align: top; width: 25%;"><small> <img
 alt="alternative unace" src="titles.png"
 style="width: 129px; height: 2px;"><br>
            <a name="download_ace_software"></a>DOWNLOADS<br>
            <img alt="wiance files" src="free-rar/extract-rar.png"
 style="width: 1px; height: 1px;" vspace="3"><br>
            <a href="index.html">All
PeaZip downloads</a><br>
            <a href="download-installer-p-windows.html">PeaZip for
Windows 32 bit</a><br>
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for Windows 64 bit</a><br>
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Portable</a><br>
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Linux/BSD</a><br>
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 alt="winace archives" src="titles.png"
 style="width: 129px; height: 2px;"><br>
            <a name="whar_are_ace_files"></a>SUPPORT<br>
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 src="free-rar/extract-rar.png" style="width: 1px; height: 1px;"
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help</a><br>
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Asked Questions</a><br>
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information</a></small><br>
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 alt="ace extension" src="titles.png" style="width: 129px; height: 2px;"><br>
            <a style="color: rgb(0, 0, 0);" name="ace_format_wiki"></a>DONATE<br
 style="font-style: italic;">
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 style="width: 1px; height: 1px;" vspace="3"><br
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Support
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or donate to FAO,
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                  <td style="text-align: right; vertical-align: middle;"><small><a
 target="_blank"
 href="https://github.com/giorgiotani/PeaZip/releases.atom">Releases
Feed</a></small></td>
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 alt="what is ace format" title="PeaZip releases feed"
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                  <td style="text-align: right; vertical-align: middle;"><small><a
 target="_blank" href="https://github.com/giorgiotani/PeaZip/wiki">PeaZip
Wiki</a></small></td>
                  <td
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 title="PeaZip Wiki online" alt="what are ace archives"
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 alt="ace format specifications" title="Search in PeaZip project domain"
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